n.象牙；乳白色
The men trafficked with the natives for ivory. 這些人與土著居民做買賣以換取象牙。
The professor lived in an ivory tower. 這個教授生活在象牙塔中。
His nails resemble the ivory keys of the spinet. 他的指甲象白色的琴鍵一樣。
